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NETW204 Week 2
Configurations
Question | Answer |
---|---|
Border Gateway Protocol (BGP) | Used between Internet service providers (ISP) as well as between ISPs and their larger private clients to exchange routing information. |
Dynamic Routing Protocols | Exchange of routing information between routers. Dynamically learn information about remote networks and determines the best path to each network. |
Routing Protocol | A set of processes, algorithms, and messages that are used to exchange routing information and populate the routing table with the routing protocol's choice of best paths. |
Algorithm | A finite list of steps used in accomplishing a task |
Autonomous System (AS) | Is a collection of routers under a common administration. |
Interior Gateway Protocols (IGP) | Used for intra-autonomous system routing which is routing inside an autonomous system |
Exterior Gateway Protocols (EGP) | Used for inter-autonomous system routing which is routing between autonomous systems |
Distance Vector | Routes are advertised as vectors of distance and direction. |
Classful Routing Protocols | Do not send subnet mask information in routing updates. |
Classless Routing Protocols | Include the subnet mask with the network address in routing updates |
Convergence | When the routing tables of all routers are at a state of consistency. |
Convergence Time | The time it takes routers to share information, calculate best paths and update their routing tables |
Metrics | Is a way to measure or compare in order to determine which route is the best path and assign costs to reach remote networks. |
Neighbors | Are routers that share a link and use the same routing protocol. |
Network discovery | A part of the process of the routing protocol algorithm that enables routers to first learn about remote networks |
Split Horizon | Prevents information from being sent out the same interface from which it was received |
Periodic Updates | Refers to the fact that a router sends the complete routing table to its neighbors at a predefined interval. |
Triggered Update | Is a routing table update that is sent immediately in response to a routing change. |
Routing Loop | A condition in which a packet is continuously transmitted within a series of routers without ever reaching its intended destination network. |
Count To Infinity | Is a condition that exists when inaccurate routing updates increase the metric value to "infinity" for a network that is no longer reachable. |
Route Poisoning | Used to mark the route as unreachable in a routing update that is sent to other routers. |
Time To Live (TTL) | Is an 8-bit field in the IP header that limits the number of hops a packet can traverse through the network before it is discarded. |